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l. NATHAN WATER HEATER.

' APPLICATION HLED 11111.25. 1915.

Patented Aug. 22, 1916.

UXTITED STATES PATENT OFFICE.

,iQHId' NATHAN, 9F LOS ANG-ELES, CALIFORNIA.

Vx'ATER-HEATER.

1 sensor.

" ation filed January 25, 1915.

do it K110 oi Californ new and useiul Heaters, of which the following a.

out Len.

i'v'lv inven relates to a fluid A 'orence to a device tricaily heating fluids in closed cats I cally water bags and the like, oh

' ivention being to provide a simple, razonon'iical and sujstantial devic which is adapted to engage the threaded annulus in the neck of a water bag orother ciiintainer, and form a seal plug therefor and by means of which the water in such container may be hear-ed to any desired tem iierature. These and other objects are accompliehed'by the device shown in the accompanying drawing and representing a preferred form.

Figure 1 is a sectional elevation showing the heater as applied to a rater bag, the electrodes, the nut For moving one of the electrodes and a, means for holding said-nut .nient. Fig. 2 is a section on 1, showing tne nut and the ,1 .rodc holccr movable thereby. F 1g. 3 13 an edge view of the nut. Fi -1 is a sectional elevation of a slightly modined form, show ing a holder for two electrodes; and the nut for moving the holder, and Fig. 5 is a tion on lines 5 5, Fig. 4

My invention comprises a. body portion 1, having: a reduced threaded end 2, for engaging a threaded annulus 3, or other threaded portion of a container, vs a water bag i, and forming; therefor a seal. In said body are two electrodes 5 and (5, preferably of carbon, theiormer of which is tightly fitted and stationarily mounted in said body and projerk-a for 3* oi its length beyond the end thereof. The electrode 1'3 is set in the end of an cxter all thrcadmi cylindrical u'ie-mber 7, of conducting material. disposed in a rel'ical bore tin and engaging the threads of said member 7, and lying in a slot 9 extending inwardly from the iei'ipnery or the belly portion, isa nut-l0 of conducting mallpecifieation of Letters Patent.

Patented Aug. 22, 1916.

Serial No. 4,360.

quently the adjustment of the carbon electrode (5, which is set in said member 7, reladevice, for preventing the turning of said member with said nut 10. At itstop, the body it has a reduced threaded portion 17,-. for a cap 18, and cavity 19 for purposes to appear presently. On said cap 18 are two current conducting posts 20 and 21, having a, threaded shanks and 23 extending 76 through the wall of said cap, nuts 24 and 25 on said shanks serving to hold said posts 20- and 21,, respectively, in place, and also to fasten between them and washers 26 and 27, the ends of wires 28 and29, respectivel The wire 28 is run through a vertical ho e 30 in. said body andiis held in tight engage: ment with the upper end of the fixed electrode 5, by a set screw 31, entering horizontally through said body, and the wire 29 35 is attached in any convenient manner to the cylindrical member 7. Both wires are coiled upon themselves as at 32 and 33 at points intermediate their attached ends, and these coiled portions, which furnish extra lengths required by the turning of the cap 18 andt. the movement of the electrode 6, are housed within the space of the cap and the cavity 19. The conducting posts 20 and 21 are arranged to be inserted in a light socket, not shown.

Fig. 4 illustrates a. form of my invention wherein the electrodes may be moved simultaneously. Therein the body A is composed of two sections, 314C and 35, screwed together and providing centrally thereof aslot 36, extending inwardly from the periphery, for a nut 37 engaging the threads on a cylindrical member 38, of conducting material disposed in a vertical bore 39, and having a band 40, of non-conducting material .pro-

is fixed an electrode. 41,- which extends through and beyond the end of said section 11'0 55, and extending through said member 38 is a tube 42 of insulating material having an enlargeu end for the roe geiolelectrode 43 of zl trode ll, and amending ljlxiOllfS'l z n the end of the .Jion 35. necled to said elecl iocle e a hole 45 in said cylindrical mea oer is attached at its other end so a liimliz'i 4:6 in e cap 4? screwed on al section said body. Another wire x5 is attached the endof the electrode 5-8, QXljGfiflS i; iron "11 the tube 42, an l is co: ected illiits end to a binding post $9 in said ca manipulatiowof lhe net 3?, the men and with it the electrodes and eye I moved relatively to the body A such HQGVQ' ment increasing or decreasing the ance of the electrodes in the Water or elf fluid serving as the eleclzi'olyte according; to the depth of immersion.

What I claim. is: J,

1. A fluid heater comprising a body ii sulating material having ehi'eaele' end for engagement with the threads of a Cflnlfitlllfif a cap thereon can 21 plui'nlifiy bi] ing posts, e liizecl carbon electrode in 21ml extending beyond the eml of said beeiy, movable carbon electrocle, and means; move said movable eleeeledle,

2. fluid heater comprising lmcly of insulating material, a plurality of carbon electrodes in said boclf, means to move (me of said electrodes relatively to oztlie plurality of binding; posts, em} wires em meeting said electrodes; wiish seicl bins lie; posts.

3. A fluid heater eomprising loot insulafiing" material having earl-eon ti'ode fixecl therein, and e eerbee elec movable therein and relatively lo s electrode, and means for moving seicl. mow able electroele.

4;. A fluid heater compri insulating metelfial arranged ,fe

"J in which see ll and U mom L '7" l he; will 30 means lo lock ezxifi & lly illu, and wires; said bind- 3 i905} of 2'11 said hi 1 51ml movan elecs to ope1- holder Dol y 

